Transgressive-regressive intervals of the Tethys Sea in the Middle Triassic Jilh Formation, Saudi-Arabia
Sharief, Farooq A.
Newsletters on Stratigraphy Volume 10 Number 3 (1981), p. 127 - 139
published: Dec 18, 1981
ArtNo. ESP026001003007, Price: 29.00 €
The pattern of lithofacies distribution of the exposed Middle Triassic Jilh Formation represents a wide expanse of interfingering sedimentary rocks. It shows a great variety of change in lithology, petrography and fauna, laterally and vertically. In general, this facies variation, which may reflect a systematic gradual change in depositional environments, is made up of distinctive fluvial, and restricted to some shallow marine origins. Despite the great diversity of facies in both carbonates and clastic sediments, the formation displays a cyclic succession of some stratigraphic unit indicating intervals of retreat and advance of the Tethys Sea on the edge of the Arabian Shield. Eustatic control, geographical position and several sedimentologic processes are probably the main factors for the complexity and irregularities of the transgressive-regressive intervals, and the great diversity facies of the formation.